William Keegan: Councils trying to sell off public libraries to reduce their deficits may not be allowed to do so, because in many cases the property must revert to the landowner who donated it. That's the kind of thing that happens when you replace public with private

The coalition says it must slash billions from public spending to tackle the UK's growing budget deficit. George Osborne's comprehensive spending review will reveal where the axe will fall. But should he cut as deep? And is he cutting the right things? Use this tool to conduct your own spending review